import assert from "node:assert/strict";
import fs from "node:fs";
import os from "node:os";
import path from "node:path";
import { pathToFileURL } from "node:url";
import ts from "../../web/node_modules/typescript/lib/typescript.js";

const [sourceArg, targetArg, reportArg] = process.argv.slice(2);
if (!sourceArg || !targetArg || !reportArg) throw new Error("usage: node generate-asset-catalog-migration.mjs V1_JSON V2_JSON REPORT_JSON");
const root = path.resolve(import.meta.dirname, "../..");
const temporary = fs.mkdtempSync(path.join(os.tmpdir(), "asset-catalog-migration-generator-"));
const sources = ["asset-path.ts", "capability-gates.ts", "asset-library-io.ts", "asset-catalog-v2.ts", "asset-catalog-migration.ts"];
try {
  for (const sourceName of sources) {
    const sourcePath = path.join(root, "web/protocol", sourceName);
    const result = ts.transpileModule(fs.readFileSync(sourcePath, "utf8"), {
      compilerOptions: { module: ts.ModuleKind.ES2022, target: ts.ScriptTarget.ES2022 },
      fileName: sourcePath,
      reportDiagnostics: true,
    });
    assert.deepEqual(result.diagnostics, []);
    const output = result.outputText.replaceAll(/from "\.\/([a-z0-9-]+)"/g, 'from "./$1.mjs"');
    fs.writeFileSync(path.join(temporary, sourceName.replace(/\.ts$/, ".mjs")), output);
  }
  const migration = await import(pathToFileURL(path.join(temporary, "asset-catalog-migration.mjs")));
  const value = JSON.parse(fs.readFileSync(path.resolve(sourceArg), "utf8"));
  const result = await migration.migrateAssetCatalogV1ToV2(value);
  fs.mkdirSync(path.dirname(path.resolve(targetArg)), { recursive: true });
  fs.writeFileSync(path.resolve(targetArg), `${JSON.stringify(result.manifest, null, 2)}\n`);
  fs.writeFileSync(path.resolve(reportArg), `${JSON.stringify(result.report, null, 2)}\n`);
  process.stdout.write(`asset-catalog-migration-generated catalogs=${result.manifest.catalogs.length} assets=${result.manifest.assets.length} libraries=${result.manifest.libraries.length}\n`);
}
finally {
  fs.rmSync(temporary, { recursive: true, force: true });
}